Connecter fob taps



April 26, 1938. E. AGHNIDES CONNECTER FOR TAPS, PIPES, AND THE LIKE Original Filed May 25. 1955 -2 Sheets-Sheet 1 April 26, 1938. E. AGHNIDES CONNECTIIR FOR TAPS, PIPES, AND THE LIKE Original Filed May 25, 1935 2 Sheets-Sheet 2 Il aff flltllll Reicsued Apr. 26, 1938 s PATENT OFFICE CONNEQTEB FOB TAPS, PIPES, AND THE LIKE Ene Agnnides, smsen, Belgium Original No. 2,071,780, dated February 23,193'1,

Serial No. 23,499, May 25, 1935. Application for reissue December 31, 1927.V` Serial No.

182,909. In 'Belgium l -1 claims.

The present invention relates to pneumatic connecters adapted to connect two sections of fluid pipes under pressure or to be applied to the outlet nozzle of a. tap or any other fitting.

The connecters of-this type are provided with an internal fold of their wall for forming around the pipe on which the connecter is fitted an annular space or chamber into which the fluid under pressure penetrates and acts for tightening the intumed part of the wall against ythe pipe. In these known connecters', the lnturned wall in the interior for a pneumatic pressure chamber is of decreasing thickness and moreover, its inner end being free relatively to the outer wall of the confittings or taps of variable shapes and dimensions. 0n the other hand these connecters are detached from pipes or fittings 'to which they are applied4 when the pressure of the fluid which passes through them exceeds a relatively low limit.

'I'he invention has for its object to remedy these disadvantages and in particular to create a connecter which adapts itself automatically to pipes of any dimensions and shapes, comprised within relatively wide limits, and to ensure a rigid maintenance and fluid tightness of the connecter under all pressures of the range, whether the connected pipes are rigid, flexible, stationary or movable.

Essentially these results are obtained by a connecter wherein the lnturned wall in the interior thereof isV extended in the interior of the connecter so as to form a relatively long chamber, the inturned part being fixed, -at one or more points, to the outer wall which surrounds it and wherein the internal longitudinal section along the whole length of the inturned portion decreases from the opening (truncated cone, with a straight, curved or stepped generating line). When the inturned wall (lnturned part) is connected to the outer wall solely at its end, the connecter is then only provided with a single annular pneumatic chamber; when this internal wall is also connected to the outer wall at a number of intermediate points, the annular chamber is-divided into a number of successive communicating chambers.

Such as it is, the connecter may meanwhile, in certain cases. still leave room for improvement.

The internal Wall of the chamber is deformed under the pressure of the fluid so as to apply itself to the wall of the pipe introduced into the connecter; this wall, initially truncated, therefore becomes cylindrical, when the pipe or fitting introduced is cylindrical. It thus results in the part necter, it is impossible to apply them to pipes,x

June 4, 1934 of the wall of the chamber'not in contact with the pipe, a deformation, which is not only useless, but deleterious, which is converted into a lengthening of the part situated between the terminal edge of the pipe and the end provided with the inlet orifice or orifices for the fluid into the annular chamber, which, in certain cases, en trains the detachment of the connecter.

Moreover the deformation produced by the pressure determines a tightening around the pipe which is at the maximum at the end of the pipe and which is reduced towards the part of largest diameter of the connecter in such a. manner that the effect of the pneumatic tightening is not distributed suitably over the whole part of the pipe 15 introduced into the connecter, as is the case, for example, with a cylindrical connectenkm The inver .tion provides, for remedying thisfor imparting to the inner wall of the chamber a uniform or preferably an increasing thickness from the inlet so as to meet the maximum thickness at the point of which this inner wall is connected 'to the outer wall, precisely where there are provided the openings for the admission of iiuid into the said chamber. 'There is thus ensured, along the whole length of the internal wall, a variable resistance to deformation with, as a result, a greater solidity ofthe wall and a better adherence of the latter along the whole length of the pipe. lThis wall of increasing or constant thickness may be applied in the case of chambers in succession. On the other hand there is provided a reinforcing means for vthe wall at the portion provided with an opening or openings for the admission of fluid into the annular chamber.-

' In another modified form of construction the inner wall of increasing thickness is provided on the face in question with longitudinal grooves of which the depth increases as the diameter of the wall decreases in such a manner as to leave at the bottom of these grooves a substantially uniform thickness of wall over the Whole length of the wall. In fact the increase in thickness previously provided is only obtained along longitudinal bands, preferably spaced uniformly over the entire periphery of the wall and separated by substantially constant thin bands wher'e the wall is very thin.

In this manner the inner wall of the connecter remains extensible transversely (by reason of the bands of small thickness between the ribs) and is practically inextnsible in the direction of its length. With this are associated important advantages. 'I'he inner wall is very thin at the portion thereof which 'resists transverse extension.

` As a result the insertion of the end of a pipe or tap into the connecter is much easier and consequently this end can be inserted more deeply into the connecter. Moreover by reason of the slight thickness the transmission of the pressure of the iluid is more complete as the inner wall can be deformed transversely. Also there is effectively prevented any extension of the portion of the inner wall between the end edge of the pipe or 'tap and the inlet orifices for the uid into the pneumatic chamber or chambers. From the point of view of the facility of fitting the connecter and inserting the end of the tap into this it is possible, without in any way reducing the security, to make the inner wall, in its thin bands included between the projecting ribs, of a thickness which decreases with the internal diameter of the connecter.

The accompanying drawings show by way of example, which are not limiting, various forms of construction. In these drawings:

Fig. 1 is an axial section of a connecter with a number of successive chambers.

Fig. 2 is a cross section on II-II of Fig. 1.

Fig. 3 is a cross section on III-III of Fig. 1.

Fig. 4 is an axial section of a connecter with a single annular chamber. y

Fig. 5 is a similar view of a connecter with a number of chambers mounted on. a fitting or a tap. i

Fig. 6 is an axial section of a double connecter with a single annular chamber of which the internal wall is of nonuniform thickness.

Fig. 7 shows the connecter of Fig. 6 mounted on a cylindrical pipe.

Fig. 8 is an axial section of a connecter with a number of successive chambers.

Fig. 9 is a modification of Fig. 6.

Fig.l0 is an axial section of a modification.

Fig. 11 is a horizontal section on the line XI-Xllof Fig. 10.

Fig. 12 is a front view of the inner wall of the connecter alone, l

-The connecter, such as shown in Fig. 1, has a relatively thick outer wall I and a relatively thin inner wall 2, both being of truncated shape. Between these two walls I and 2 are located annular chambers 3, 4, 5 communicating with one another by holes 6 (Fig. 2). The last, lower, annular chamber 5 communicates' with the axial passage 1 of the connecterby holes 8 (Fig. 3). 'I'he thickness of the inner wall 2 is constant; as shown in Fig. 1, this inner wall 2 is connected to the outer wall I at its end at I3 and at intermediate points at I3.

Fig. 4 shows a connecter, which only has asingle annular chamber 9, mounted on a tap Il). The chamber 9 is defined by a perforated diaphragm rib or ribs, or any suitable connection II between the inner rim I2 and the outer wall; The pressure of iiuid in the annular chamber 9 applies the inner rim I2 energetically against the tap.

Fig. 5 showsthe connecter according to Fig. l secured to a tapslll or any other suitable tting. The pressure of the iiuid is communicated to the annular chambers by the holes 6, 1. The thin inner wall 2 swells at the point of each annular chamber and is applied strongly against the outer surface of the tap. On the other hand the inner wall 2 being truncated, the annular chambers form successive cushions of decreasing diameter.

In the modifications of Figs. 6 to 9 the thickness of the inner wall 2 is no longer constant, for the purpose set out above. As shown in Fig. 6 the connecter, adapted to connect two stationary or free pipes, has at each end a widened part enabling pipes of dierent diameter and shape to be introduced. Each widened or truncated part has a double wall for forming a chamber l. The

chamber 3 is provided at its base with opening that the inner wall 2 of the chamber has a decreasing or uniform thickness from its base up to the inner edge I5, for the purpose specified. Fig. 7 shows that with this variable thickness, the inner wall is deformed unequally along 'its entire height and is applied exactly and uniformly along the whole portion of the pipe engaged in the connecter. This feature, combined with that which consists in obviating any weakening of the Wall at the point of the opening or openings, permits of avoiding the lengthening of the part located between the terminal edge of the pipe .I6 and the end secured to the `outer wall.

In the example of Fig. 8 where a number of successive chambers 3 are provided, which communicate with one another by openings G, the inner Wall 2 of the connecter is also of variable thickness; it is possible as in -the drawings, to give this Wall a uniform variation of thickness along its entire height Without considering the walls separating the chambers, or also to apply the variation of thickness of the inner Wall for each successive chamber separately. In the case of the connection with a number of communicating chambers, with equality of pressure, it is possible to adopt walls of less thickness.

In the example vshown in Figs; to l2, 3 is the annular pneumatic chamber formed by the outer wall `I and the inner wall 2 of the connecter. In practice the connecter, at the point of the chamber 3, is preferably formed of an inner body 2 (Fig. 12) composed of a tube of truncated section, provided at its upper end with a rim or flange 2 which is connected at i5 to the outer body i ofthe connecter, and of a lower enlargement I8 also Welded to the body I, passages 8 being provided in this strengthening enlarged portion I8 for the passage of fluid into the chamber 5. l

The inner wall 2 is relatively very thin and is of Vuniform thickness, or slightly increasing or decreasing in thickness with the reduction in diameter. The essential feature resides in the ribs I'I formed on the outer face of this Wall, that is to say, on the face turned towards the chamber 3.

"Ihese ribs or fins are arranged longitudinally the other hand, by reason of the ytransverse ex- 'Theirtensibility, the connecter can be iltted easily and deeply over the end of a pipe or tap.

It will be understood that in all the forms of construction the wall 2 may be in one piece with the outer wall i, or be connected to this (Figs. 8 and 9) in this latter case the walls I and 2 may be made of diierent materials, only the inner wall 2 being, for example, iiexible.

As will be seen from the drawings, the height of the inner wall 2 is at least equal to the littlest diameter of said wall.

Having now fully described my said invention, what'I claim and desire to secureby Letters Patent, is:

1. A connecter for the purpose described formed of exible material and including an outer wall, an inner wall spaced concentrically from the outer wall and connected thereto at the top whereby to form an annular chamber closed at its upper end and surrounding said inner wall, said outer wall extending below the inner will to form a uid passage, said chamber having port communication with the said passage'and the passage having a constricted outlet end, and means connecting the lower end of the inner wall to the outer Wall.

2. A connecter for the purpose described formed of iiexible material and including an outer wall, an inner wall spaced concentrically from the outer wall and connected thereto at the top whereby to form an annular chamber closed at its upper end and surrounding said inner wall, said outer wall extending below the inner wall to form a uid passage, and an annular flange connecting the lower end of the inner wall with the ohter wall and at least partially closing said chamber, said chamber having port communication with the passage.

3. A connecter for the purpose described formed 0f exible material and including an Outer Wall,

an inner wall spaced concentrically from the outer wall and connected thereto` at the top whereby to form an annular chamber closed at its upper end and surrounding said inner wall, said outer wall extending below the inner wall to form a uid e, and an annular ange connecting the lower end of the inner wall `with the outer wall and at least partially closing said chamber, 'said chamber having port communication with the passage, and other annular iianges connecting the inner and outer walls above the rst flange and provided with port openings.

l 4. A connecter for the purpose described formed of ilexible material and including an outer wall,

an inner wall spaced concentrically from the outerwall and connected thereto at the top whereby to form an annular chamber closed at its upper end and surrounding said inner wall, said outer wall extending below the inner wall to form a iiuid passage, and an annular flange connecting the lower end of the inner wall with the outer wall and at least partially closing said chamber, said chamber having port communication with the passage, said iiange extending longitudinally of the outer wail for a distancegreater than the thickness of the inner wall.

5. A connecter for the purpose described formed of flexible material and including an outer wall, an inner wall spaced concentrically from the outer wall and connected thereto at the top whereby to form an annular chamber closed at its upper enclv and surrounding said inner wall, said cuter wall extending below the inner wall to form a fluid passage, an annular flange connecting the lower end of the inner wall with the outer wall and Aat least partially closing said chamber, said chamber having port communication with the passage, and ribs extending longitudinally of the outer side of theinner wall from the flange to the upper end of the chamber.

6. A connecter for the purpose described formed of flexible material and including an outer wall, an inner wall spaced concentrically from the outer wall and connected thereto at the top whereby to form an annular chamber closed at its upper end and surrounding said inner wall, said outer wall extending below the inner wall to form a fluid passage, anannular ange connecting the lower end of the inner wall with the outer wall and at least partially closing said chamber, said chamber having port communication with'the passage, said flange extending` longitudinally of the outer wall for a distance greater than the thickness ofthe inner wall, and ribs extending longitudinally of the outer side of the inner wall from the flange to the vupper end of the chamber.

7. A connecter for the purpose described including an outer wall, an inner wall i'orxned of flexible material spaced concentrically from they outer wall and connected thereto at the top whereby to form an annular chamber closed at its upper end and surrounding said inner wall, said outer wall extending below the inner wall to form a uid passage, means connecting the lowex` endfo'f the inner vwall to the outer wall and ports leading from said tluid passage into the said annular chamber. v

ELIE AGHN'IDES. 

